Ring Size Guide

Below is a chart which lists British, European, Japanese, and American systems size by side

Sizes by "leading edge" rather than "middle". Diameter = Internal diameter in millimetres. Circumference = Internal circumference in millimetres.

Ring Size UK Measurement (mm) USA Size
D 41 2
E 43 2.5
F 44 3
G 45 3.5
H 46 4
I 47 4.5
J 49 5
K 50 5.5
L 51 6
M 52 6.5
N 54 7
O 55 7.5
P 56 8
Q 57 8.5
R 59 9
S 60 9.5
T 61 10
U 62 10.5
V 63 11
W 65 11.5
X 66 12
Y 67 12.5
Z 69 13
Z+1 70 13.5
Z+2 71 14
Z+3 73 14.5
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